Portable payment machine



FIG. 1 is a front view showing a portable payment machine showing my new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a left-side view thereof;

FIG. 4 is a right-side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a front perspective view thereof; and,

FIG. 8 is a rear perspective view thereof. 

CLAIM The ornamental design for a portable payment machine, as shown and described. 